Results 21 to 30 of about 5,092 (173)

Single-cell analysis of developing and azoospermia human testicles reveals central role of Sertoli cells

Nature Communications, 2020
Non-obstructive azoospermia affects 1% of men. Here, authors perform single-cell transcriptomic analysis of human testicular cells from healthy donors and non-obstructive azoospermia patients and find that inhibition of Wnt signaling promotes the ...
LiangYu Zhao, ChenCheng Yao, XiaoYu Xing, Tao Jing, Peng Li, ZiJue Zhu, Chao Yang, Jing Zhai, RuHui Tian, HuiXing Chen, JiaQiang Luo, NaChuan Liu, ZhiWen Deng, XiaoHan Lin, Na Li, Jing Fang, Jie Sun, ChenChen Wang, Zhi Zhou, Zheng Li   +19 more
doaj   +1 more source

Clinical and laboratory differences between chromosomal and undefined causes of non-obstructive azoospermia: A retrospective study

São Paulo Medical Journal, 2022
BACKGROUND: Knowledge of clinical and laboratory differences between chromosomal and undefined causes aids etiological research on non-obstructive azoospermia.
Luísa Riccetto, Tarsis Paiva Vieira, Nilma Lucia Viguetti-Campos, Tais Nitsch Mazzola, Mara Sanches Guaragna, Helena Fabbri-Scallet, Maricilda Palandi de Mello, Antonia Paula Marques-de-Faria, Andrea Trevas Maciel-Guerra, Gil Guerra Junior   +9 more
doaj   +1 more source

Management of the Infertile Male with Azoospermia

Düzce Tıp Fakültesi Dergisi, 2022
Azoospermia means the complete absence of spermatozoa upon examination of the semen. Azoospermia may result from a lack of spermatozoa production in the testicles, or from an inability of produced spermatozoa to reach the emitted semen.
Erdem Akbay, Mesut Tek
doaj   +1 more source

Obstructive azoospermia

Urologiya, 2020
В статье рассмотрен вопрос мужского бесплодия по причинам обструктивных азооспермий. Проведен обзор международных рекомендаций, проспективных и ретроспективных исследований, клинических наблюдений, обзоров в области эпидемиологии, этиологии, локализации патологических состояний, приводящих к обструкции семенных путей.
openaire   +3 more sources

Sperm retrieval techniques in azoospermic patients: PESA, MESA, TESA, TESE and MICROTESE [PDF]

Einstein (São Paulo), 2009
Azoospermia is defined as the absence of mature spermatozoa in semen analysis after centrifugation. The causes of azoospermia may be related to spermatogenesis defects and classified as non-obstructive azoospermia, or to the obstruction of the efferent ...
Marcelo Vieira, Sidney Glina
doaj  

Analysis of Y Chromosome Microdeletions and Mutation in Exon7 of the STAG3 Gene in Iranian Infertile Men with Idiopathic Non-Obstructive Azoospermia [PDF]

Majallah-i dānishgāh-i ̒ulūm-i pizishkī-i Arāk, 2016
Background: Azoospermia is defined as the absence of sperm in the semen and is divided in two types; obstructive and non-obstructive azoospermia. Non-obstructive azoospermia include approximately 60% of azoospermia patients.
Sara Pouriamanesh, Ziba Kamalian, Pedram Shafaat, Mona Amin Bidokhti, Nasser Salsabili, Reza Mirfakhraei   +5 more
doaj  

Testicular antispermatogenic antibodies in obstructive azoospermia [PDF]

Reproduction, 1976
Departments of Venereology, Clinical Pathology, and Obstetrics and Gynaecology, Al Hussein Hospital, Al Azhar University, Cairo, Egypt High titres of antisperm antibodies have been found in the sera of patients suffering from obstruction in the sperm passages (Shulman, 1971; Abdel Aal, El Atribi, Abdel Hafiz & Aidaros, 1975).
H, Abdel Aal, A, Abdel Hafiz, O, Kandil, H, El Tonsy   +3 more
openaire   +2 more sources

Machine learning and integrative analysis identify the common pathogenesis of azoospermia complicated with COVID-19

Frontiers in Immunology, 2023
BackgroundAlthough more recent evidence has indicated COVID-19 is prone to azoospermia, the common molecular mechanism of its occurrence remains to be elucidated.
Jiarong He, Yuanqiao Zhao, Zhixian Zhou, Mingming Zhang   +3 more
doaj   +1 more source

Role of testicular fine‐needle aspiration in the modern male reproductive urologist′s practice

UroPrecision, EarlyView.
Abstract Background Azoospermia affects 10%–15% of infertile men, with non‐obstructive azoospermia (NOA) most often managed by microdissection testicular sperm extraction (mTESE). Despite AUA/ASRM guidelines recommending mTESE, some urologists employ testicular fine‐needle aspiration (TFNA) mapping as a diagnostic adjunct.
Parth Joshi, Jordan Kassab, Vivek Aslot, Richard Schoor   +3 more
wiley   +1 more source

Sperm retrieval techniques for assisted reproduction

International Brazilian Journal of Urology, 2011
Different surgical methods such as PESA, MESA, TESA, TESE and micro-TESE have been developed to retrieve spermatozoa from either the epididymis or the testis according to the type of azoospermia, i.e., obstructive or non-obstructive.
Sandro C. Esteves, Ricardo Miyaoka, Ashok Agarwal   +2 more
doaj   +1 more source